Quotation from: Manual of SurgeryWritten by: Alexander Miles and Alexis Thomson |
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#Moles.#--The term mole is applied to a pigmented, and usually hairy, patch of skin, present at or appearing shortly after birth. The colour varies from brown to black, according to the amount of melanin pigment present. The lesion consists in an overgrowth of epidermis which often presents an alveolar arrangement. Moles vary greatly in size: some are mere dots, others are as large as the palm of the hand, and occasionally a mole covers half the face. In addition to being unsightly, they bleed freely when abraded, are liable to ulcerate from friction and pressure, and occasionally become the starting-point of melanotic cancer. Rodent cancer sometimes originates in the slightly pigmented moles met with on the face. Overgrowths in relation to the cutaneous nerves, especially the plexiform neuroma, occasionally originate in pigmented moles. Soldau believes that the pigmentation and overgrowth of the epidermis in moles are associated with, and probably result from, a fibromatosis of the cutaneous nerves.
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